What carriers are best with iphones?

I plan on getting an iPhone soon, which carrier is best with iphones version, boost, virgin mobile, t-mobile, sprint, AT&T.

BTW, the iPhone I'm getting is NOT under contract.

I have verizon and I always have signal and very fast internet, verizon was always known as a big company, they are a bit expensive though.

I think Verizon is better. It's very fast

Its Verizon fyi, & as far as which is better the better thing to do would be to check their websites for coverage areas & plans to see which fits you & budget. All of them are capable carriers but some would be better than others in certain respects.

That depends entirely on where you live.